ssdss Examples

Find the 10 brightest SDSS point sources in a 1/3-degree square centered on 12:00:00 +2:00:00 J2000 and sort them by right ascension.: ssdss -s r -hn 10 -r -600 12:00:00 +2:00:00 J2000
produces the following: ssdss WCSTools 3.6.9, 6 July 2007, Doug Mink SAO SDSS 12:00:00.000 +02:00:00.00 J2000 +- +00:10:00.4 +00:10:00.0 at epoch 2000.0000 10 / 2552 SDSS Sources (Magu brighter than 15.42) SDSS_number RA2000 Dec2000 Magu Magg Magr Magi Magz Type Arcsec 587726014532026403 11:59:29.890 +01:53:27.72 14.18 13.19 12.92 13.48 12.50 6 598.03 587726014532026410 11:59:30.083 +01:56:33.09 14.03 13.79 13.53 10.86 11.29 6 493.92 587726014532026445 11:59:33.046 +01:57:11.45 15.17 13.82 13.38 13.62 13.06 6 437.82 587726032248504373 11:59:39.110 +02:06:00.00 15.38 14.05 13.64 13.85 13.45 6 477.13 587726014532026483 11:59:56.026 +01:58:19.74 12.94 13.89 10.66 10.55 10.95 3 116.63 587726032248569870 12:00:06.502 +02:08:11.99 15.13 14.04 14.64 13.50 13.39 6 501.55 587726032248569878 12:00:07.821 +02:06:39.15 14.44 14.32 14.11 11.53 12.92 3 416.01 587726014532091920 12:00:13.464 +01:57:34.88 14.76 13.46 14.65 12.42 13.16 6 248.60 587726014532091953 12:00:24.853 +01:52:17.67 15.42 14.17 14.02 13.23 12.71 3 593.77 587726014532091983 12:00:34.057 +01:59:26.46 14.08 12.44 11.92 11.84 12.64 6 511.65 Note that Type=3 indicates galaxies and Type=6 indicates stars

Find all SDSS sources in a 1/3-degree circle and write results to a file: ssdss -twr 600 -o test 13:27:48.311 +1:27:28.98 B1950
produces the following in the file test.sdss: catalog SDSS ra 13:27:48.311 dec +01:27:28.98 radecsys fk4 equinox 1950.0000 epoch 1950.0000 radsec 600.00 catsort mag program ssdss WCSTools 3.6.9, 6 July 2007, Doug Mink SAO sdss_id ra1950 dec1950 magu magg magr magi magz type arcsec ------------------ ------------ ------------ ----- ----- ----- ----- ----- ---- ------ 587726031184723987 13:27:56.431 +01:28:47.83 14.78 12.62 14.46 14.54 13.18 6 145.06 588848901533138990 13:27:17.800 +01:21:13.37 14.87 14.42 14.00 20.97 14.39 3 591.96 587726031184658473 13:27:16.842 +01:30:51.89 14.95 14.87 12.11 14.04 12.83 6 513.65 588848901533139055 13:27:44.229 +01:20:32.60 15.01 13.83 13.43 13.38 13.19 6 420.85 587726031184658524 13:27:34.933 +01:33:18.37 15.13 13.99 13.57 15.51 13.45 6 402.88 . . . 588848901533204692 13:28:19.729 +01:23:33.61 20.00 18.60 18.12 17.79 17.58 3 526.65 587726031184724026 13:28:05.762 +01:31:01.38 20.02 18.48 17.39 16.83 16.50 3 337.03 587726031184658644 13:27:25.421 +01:33:49.87 20.02 18.81 18.34 17.99 17.73 3 512.72 588848901533139130 13:27:37.224 +01:26:11.91 20.13 18.57 17.99 17.74 17.61 6 183.24 587726014005051592 13:27:41.165 +01:36:13.06 20.14 18.46 17.81 17.60 17.52 6 534.92

Find the closest SDSS source to 10:00:00 +1:00:00 J2000: ssdss -ha 10:00:00 +1:00:00 J2000
produces the following: ssdss WCSTools 3.6.9, 6 July 2007, Doug Mink SAO Find closest star SDSS 10:00:00.000 +01:00:00.00 J2000 r= +00:02:00.0 at epoch 2000.0000 SDSS_number RA2000 Dec2000 Magu Magg Magr Magi Magz Type Arcsec 587728950121268151 10:00:00.022 +00:59:46.57 26.97 23.06 22.05 23.55 20.55 8 13.43

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